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Effective Cable Separation #78650
10/11/01 07:06 AM
10/11/01 07:06 AM
W
WARREN1  Offline OP
Member
Joined: May 2001
Posts: 176
Greenville, SC, USA
Mixing of cables over 600 volts and cables under 600 volts in manholes is permitted by Art. 300-3(2)(e) if they are "effectively separated". "Effectively separated" is not defined. So far, I have not seen anything in IEEE or other publication to give definition. Some say that Art. 725-54 implies the Code Panel requires cable separation in accordance with the Exceptions.
[Linked Image]Some thoughts from this forum??

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Re: Effective Cable Separation #78651
10/12/01 07:14 PM
10/12/01 07:14 PM
S
sparky  Offline
Member
Joined: Oct 2000
Posts: 5,372
WARREN1,
I keep seeing that 2" rule pop up. The exceptions are certainly lengthly on this one..

Re: Effective Cable Separation #78652
10/22/01 10:51 PM
10/22/01 10:51 PM
T
Tom Baker  Offline
Member
Joined: Oct 2001
Posts: 30
Bremerton WA
Could you sleeve the under 600 v in a NM flex conduit?

And to effectivly separate I think they would have to be secured in place


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